<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <div class="demo01">
        你好， <span th:utext="${concent}" style="color: #f00;"></span>
    </div>
</body>
</html>
<style>
    .demo01 {
        color: rebeccapurple;
        width: 100px;
        height: 100px;
        background: aqua;
    }
</style>